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Amtrak's Acela Express trains are breaking the speed limit along some stretches in the Northeast corridor. The company it testing how its trains and tracks perform at speeds up to 165 mph. Tests are happening along four isolated stretches of track in Maryland, Delaware, New Jersey, Rhode Island and Massachusett

Iranian President Mahmoud Ahmadinejad used his eighth appearance before the U.N. General Assembly to elaborate on his vision of a new world order and criticize what he calls the world's "hegemonic" and "expansionist" powers.

A new report outlines abuses in the nation's largest jail system. The report contains tough criticism of Los Angeles County Sheriff Lee Baca, who oversees the jails. It accuses him of mismanagement and ignoring years of abuse.

When it comes to characters, detail is everything. Right down to the nail polish.

It is now clear that we are living in a world of viral memes that take no sides when it comes to spoofing politicians or debate moderators. So what's a politician to do as the target of a social media parody? Run with it.

Sidney Rittenberg is one of only a few American citizens to have joined the Chinese Communist Party. Though he was imprisoned for 16 of his 35 years in China, he still regards Chairman Mao as both hero and criminal.

The EU says a recent change in Google's privacy policy that allows it to combine and share data collected from all of its different services is a breach of European privacy law. Regulators say Google needs to be transparent about how it's using that data, and give users the choice to opt out.

Because we had better food, our brains grew bigger than those of our primate cousins, scientists say. Early humans cooked, which makes meat and veggies more digestible and nutrients more available to the body. Plus, there was all that chatting and chewing around the campfire.

Scientists have partially decoded the genetic sequence of a new virus, which has killed one man and hospitalized another. Advances in sequencing technologies have helped health workers rapidly respond to the virus in ways that they couldn't during the SARS epidemic of 2002.

Using silicon, magnesium and a special type of silk, scientists have created electronic circuits that dissolve in liquid. Electronics like these could be useful in future implantable medical devices.